Sammo

Continuity mistake: Look at Matthew Lillard once Billy says "What's the matter, Sidney? Looks like you've seen a ghost." He's scratching his cheek, but in the next shot his arm is down his side. (01:31:15)

Sammo ★

Continuity mistake: Billy's expression is entirely different in the two shots when he raises his gun and points it at Randy. (01:30:25)

Sammo ★

Continuity mistake: In the scene at the TV truck, the killer's knife is blood-free even after slicing the cameraman's throat and stabbing Sidney, if you look at him when he tries to open the door and when he gets in. When he shakes his fist at Sidney for running away though, the knife is all bloodied up. (01:24:00)

Sammo ★

Continuity mistake: When the killer slits Kenny's throat, Sidney in the background stifles a shout with one hand on her mouth, both hands in the next shot. She opens her hands but her right hand is still glued to her face in a further cut. (01:23:40)

Sammo ★

Continuity mistake: When Kenny the cameraman spots the front door open and turns around to look again at the truck, Sidney before the camera cuts away is turning all the way to look at the monitor as well, but in the next shot she's still facing Kenny. (01:23:35)

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Audio problem: When Sidney gets in the truck, Kenny tells her "There's a camera in the house" but his mouth barely moved. (01:23:15)

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Other mistake: In the first scene with Randy telling Jamie Lee Curtis to turn around, the reflection in the TV never mirrors the actual position of Jamie Kennedy. (01:22:30)

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Continuity mistake: Plummeting from the roof onto a boat, Sid causes a wetsuit (or a similar kind of fabric) to fall off. In the closer shot, the cloth is much more entangled than in the other view - look at the pink band. (01:21:55)

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Continuity mistake: Off-balance on the roof as she shouts for help, Sid is hanging by the window with one hand or both depending on the shot. (01:21:45)

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Character mistake: Sid deduces that Billy could be the killer because he could have used his phone call from jail to make the threatening call. However, the deduction has to be incorrect, since if it was really Billy, he could have never used the voice-changing device.

Sammo ★

Other mistake: Tumbling down the ditch with Dewey, you can see that Gale loses her red pumps. In the rest of the scene though she goes to Mr. Prescott's car first and then back towards the street without fetching her shoes back. (01:17:55)

Sammo ★

Other mistake: Randy answers the phone and receives the news that the principal has been killed and left to hang from the goalpost. He gets the call from the telephone by the TV, and he his head reaches about half the height of the TV. The hidden camera is on top of the VHS player, a shelf underneath the TV, but somewhat Gale and Kenny in the TV truck get a close-up of his mouth. (01:16:00)

Sammo ★

Audio problem: Gale exits the TV truck telling her cameraman "I'll be right back" to go with the theme of the movie. However, the line is dubbed over and Courteney Cox says something shorter and different. (01:14:25)

Sammo ★

Continuity mistake: Randy pauses the movie and gets up to explain "the rules." Stu comments "Have an aneurysm, why don't ya?" Matthew Lillard's hand is in a different position in that shot. Not only that; the only extra you can partially see on the right in the background, in the previous shot made a disappointed gesture and lowered his arm, and in this new shot he lowers it again anew. (01:13:05)

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Continuity mistake: When Sid and Billy make out and talk about Meg Ryan and other kinds of movies, their hands go on and off the back of their heads between shots. (01:11:00)

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Continuity mistake: The killer is holding the knife he uses to cut Tatum at an angle that changes between shots when he's threatening her. (01:06:25)

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Continuity mistake: In the garage scene, Tatum grabs 5 bottles of beer. She initially has 4 of them in her right hand, a single one in her left, and in fact she can easily reach the fridge door and close it with that hand. New shot, and she is not closing the door anymore with her left hand, suddenly busy with the other bottles, and she has to use her foot. (01:05:05)

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Continuity mistake: When Gale makes her entrance in the room with all the teenagers at the party, look at her position in particular in relation with Matthew Lillard; she wouldn't pass Sidney by in the spot when it happens, and she approaches him in different positions. (01:03:50)

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Continuity mistake: At the party, Randy asks (with a weird "yeeeeh!" that appears to be dubbed over) how many "hellraisers" are there. Matthew Lillard points at Rose McGowan two times in two different shots and not with the same hand either. (01:02:55)

Sammo ★

Continuity mistake: Kenny passes the camera to Gale as she fetches the coat. The hand he used to slip her the camera joins the other hand on top of a plastic case, but in the next shot his right arm is again lowered. (01:02:45)

Sammo ★